WHY KARATE FRAMEWORK IS AWESOME?
Behaviour-Driven Development (BDD) is an software development approach that provides the communication between technical and non-technical teams. It is evolved from Test Driven Development and similar with TDD, but BDD mostly deals with the user behavior of the system.
Karate Framework is an open source tool for API test automation. Tests are written in Gherkin format which is also using for BDD. So even non-developers can be able create api tests for services. Let’s check some of main features of the framework and how API test development became easier with it..
- API Request Methods
As you know, there is different API request methods such as ‘get’, ‘put’, ‘update’ etc. Calling an endpoint using with API request method is very simple by Karate as below. Just type method name which you need after ‘method’ keyword.
When method GET
...
When method POST
...
When method DELETE
...
When method PATCH
...
- Assertion and Validation
Assertions and Validations are the key point of the test processes to check responses or expected results. You don’t make sure that the application is working correctly without the assertions or validations of manual or automated test cases.
At this point, Karate emerges with variety pretty solution to verify test cases.
=> Status Code Check
Then status 200
=> Response field check
And match product.data[0].name == 'We are KLOIANs'
=> Is response contain check
And match response contains {price: 2.5}
- Reading Files
Reading files is one of very common need in test automation project to re-use or manipulate Payload data, scripts or functions. Especially I’ve faced a need to read and modify DTOs many times in the projects. When focused on reading files, Karate supports to read .json, .xml, .yaml, .js, .csv or .txt data file type.
* def json = read('some.json')
* set json.item[] = 'string'
And request read('product-update-data.json')
- Calling Feature File or Scenario
Writing same test cases and codes over and over again is a common problem for development . To avoid from writing repetitive scenarios or steps, use “call” method. “call” method can be used for whole feature file or a specific scenario by its tag.
Given call read('call.feature')
Given call read('classpath:call.feature@kloian')
Nowadays, software testing is becoming more important and resources allocated for testing are increased. With the widespread of microservice architecture, api tests have started to have an important place in software testing.
Manual tests for api testing are inadequate today. Therefore, we should support the process with automation tests and increase the quality and reliability of the application. At this point the Karate Framework is a simple and very good solution that allows us to easily write automation tests without any extra development cost.












